<template>
    <div ref="circleEchartsRef" style="width:100%;height: 100% ;"></div>
</template>
<script setup>
import { onMounted, ref, watch, getCurrentInstance } from 'vue';
import * as echarts from 'echarts';
import "echarts-gl";
const { proxy } = getCurrentInstance();

const circleEchartsRef = ref();
const props = defineProps({
    seriesData: {
        type: Object,
        required: true
    },
    legend: {
        type: Boolean,
        default: true
    }
});
let myChart = null;
let optionsData = props.seriesData;
let showLegend = props.legend;
//监听数据变化，可以做更新图标操作
watch(() => props.seriesData, (val, oldVal) => {
    optionsData = val;
    setEchartsOption(myChart, optionsData);
});

onMounted(() => {
    myChart = echarts.init(circleEchartsRef.value);
    setEchartsOption(myChart, optionsData);
    proxy.$bus.on('resize', (res) => {
        myChart.resize();
    })
})
const setEchartsOption = (myChart, optionsData) => {
    const series = getPie3dSeries(optionsData, 0.7); // 可做为调整内环大小 0为实心圆饼图，大于0 小于1 为圆环
    //自定义图例name的样式
    var optionRich = {
        a: {
            width: 80,
            fontSize: 12,
            fontWeight: 400,
            color: '#99C3E5',
            lineHeight: 20,
            padding: [0, 0, 0, 0],
        },
    };
    //自定义图例value值的样式
    if (optionsData) {
        optionsData.forEach((ele, i) => {
            optionRich[i] = {
                width: 20,
                fontSize: 12,
                fontWeight: 400,
                lineHeight: 20,
                color: '#99C3E5',
                align: 'center',
                padding: [0, 0, 0, 0],
            };
        });
    }

    // 准备待返回的配置项，把准备好的 legendData、series 传入。
    let option = {
        // backgroundColor: "#081A52",
        legend: {//图例配置
            show: showLegend,
            tooltip: {
                show: false,
            },
            orient: "horizontal",//horizontal
            selectedMode: false,
            // top: "middle",
            // right: '5%',
            // width: '100%',
            left: "center",
            bottom: 0,
            itemGap: 14,
            itemHeight: 8,
            itemWidth: 8,
            itemRadius: 20,
            textStyle: {
                rich: optionRich
            },
            formatter: (name) => {
                if (optionsData.length) {
                    // let index = 0;
                    // let value = 0;
                    // for (let i = 0; i < optionsData.length; i++) {
                    //     if (optionsData[i].name == name) {
                    //         value = optionsData[i].value ? optionsData[i].value : 0;
                    //         index = i;
                    //     }
                    // }
                    return `{a|${name}}`;
                }
            },
        },
        animation: true,
        tooltip: {
            show: true,
            textStyle: {
                fontSize: 14,
            },
            formatter: (params) => {
                if (params.seriesIndex > 0) {
                    return `${params.marker}${params.seriesName}：${optionsData[params.seriesIndex - 1].value}`;
                }
                return "";
            },
        },
        title: {
            x: "center",
            top: "20",
            textStyle: {
                color: "#fff",
                fontSize: 22,
            },
        },
        labelLine: {
            show: true,
            lineStyle: {
                color: "#7BC0CB",
            },
            normal: {
                show: false,
                length: 10,
                length2: 10,
            },
        },
        label: {
            show: true,
            position: "outside",
            formatter: function (optionsData) {
                return (
                    "{name|" +
                    optionsData.name +
                    "}" +
                    " {value|" +
                    optionsData.percent.toFixed(0) +
                    "%}"
                );
            },
            rich: {
                name: {
                    fontSize: 14,
                    color: "#ffffff",
                },
                value: {
                    fontSize: 14,
                    color: "#ffffff",
                },
            },
            textStyle: {
                color: "#fff",
                fontSize: "14px",
            },
        },
        xAxis3D: {
            min: -1,
            max: 1,
        },
        yAxis3D: {
            min: -1,
            max: 1,
        },
        zAxis3D: {
            min: -1,
            max: 1,
        },
        grid3D: {
            show: false,
            boxHeight: 2,
            top: '-20',
            left: 'center',
            viewControl: {
                distance: 180,
                alpha: 40,//翻转角度
                beta: 100,//旋转角度
                autoRotate: false, // 自动旋转
            },
        },
        series,
    };
    myChart.setOption(option);
}
//生成扇形曲面参数方程
function getParametricEquation(startRatio, endRatio, isSelected, isHovered, k, height, i) {
    // 计算
    let midRatio = (startRatio + endRatio) / 2;

    let startRadian = startRatio * Math.PI * 2;
    let endRadian = endRatio * Math.PI * 2;
    let midRadian = midRatio * Math.PI * 2;

    // 如果只有一个扇形，则不实现选中效果。
    if (startRatio === 0 && endRatio === 1) {
        isSelected = false;
    }

    // 通过扇形内径/外径的值，换算出辅助参数 k（默认值 1/3）
    k = typeof k !== "undefined" ? k : 1 / 3;

    // 计算选中效果分别在 x 轴、y 轴方向上的位移（未选中，则位移均为 0）
    let offsetX = isSelected ? Math.cos(midRadian) * 0.1 : 0;
    let offsetY = isSelected ? Math.sin(midRadian) * 0.1 : 0;
    let offsetZ = i == 1 ? 2 : 0;
    // 计算高亮效果的放大比例（未高亮，则比例为 1）
    let hoverRate = isHovered ? 1.05 : 1;

    // 返回曲面参数方程
    return {
        u: {
            min: -Math.PI,
            max: Math.PI * 3,
            step: Math.PI / 32,
        },

        v: {
            min: 0,
            max: Math.PI * 2,
            step: Math.PI / 20,
        },

        x: function (u, v) {
            if (u < startRadian) {
                return (
                    offsetX + Math.cos(startRadian) * (1 + Math.cos(v) * k) * hoverRate
                );
            }
            if (u > endRadian) {
                return (
                    offsetX + Math.cos(endRadian) * (1 + Math.cos(v) * k) * hoverRate
                );
            }
            return offsetX + Math.cos(u) * (1 + Math.cos(v) * k) * hoverRate;
        },

        y: function (u, v) {
            if (u < startRadian) {
                return (
                    offsetY + Math.sin(startRadian) * (1 + Math.cos(v) * k) * hoverRate
                );
            }
            if (u > endRadian) {
                return (
                    offsetY + Math.sin(endRadian) * (1 + Math.cos(v) * k) * hoverRate
                );
            }
            return offsetY + Math.sin(u) * (1 + Math.cos(v) * k) * hoverRate;
        },

        z: function (u, v) {
            if (u < -Math.PI * 0.5) {
                return Math.sin(u);
            }
            if (u > Math.PI * 2.5) {
                return Math.sin(u);
            }
            return Math.sin(v) > 0 ? 1 * height : -1;
        },
    };
}
// 生成模拟 3D 饼图的配置项
function getPie3dSeries(pieData, internalDiameterRatio) {
    let series = [];
    let sumValue = 0;
    let startValue = 0;
    let endValue = 0;
    let legendData = [];
    let k =
        typeof internalDiameterRatio !== "undefined"
            ? (1 - internalDiameterRatio) / (1 + internalDiameterRatio)
            : 1 / 3;

    // 为每一个饼图数据，生成一个 series-surface 配置
    for (let i = 0; i < pieData.length; i++) {
        sumValue += pieData[i].value;

        let seriesItem = {
            name: typeof pieData[i].name === "undefined" ? `series${i}` : pieData[i].name,
            type: "surface",
            parametric: true,
            wireframe: {
                show: false,
            },
            pieData: pieData[i],
            itemStyle: {
                color: pieData[i]['color'], // 自定义颜色
                opacity: '0.7'
            },
            pieStatus: {
                selected: false,
                hovered: false,
                k: k,
            },
        };

        if (typeof pieData[i].itemStyle != "undefined") {
            let itemStyle = {};

            typeof pieData[i].itemStyle.color != "undefined"
                ? (itemStyle.color = pieData[i].itemStyle.color)
                : null;
            typeof pieData[i].itemStyle.opacity != "undefined"
                ? (itemStyle.opacity = pieData[i].itemStyle.opacity)
                : null;

            seriesItem.itemStyle = itemStyle;
        }
        series.push(seriesItem);
    }

    // 使用上一次遍历时，计算出的数据和 sumValue，调用 getParametricEquation 函数，
    // 向每个 series-surface 传入不同的参数方程 series-surface.parametricEquation，也就是实现每一个扇形。
    for (let i = 0; i < series.length; i++) {
        endValue = startValue + series[i].pieData.value;
        series[i].pieData.startRatio = startValue / sumValue;
        series[i].pieData.endRatio = endValue / sumValue;
        series[i].parametricEquation = getParametricEquation(
            series[i].pieData.startRatio,
            series[i].pieData.endRatio,
            false,
            false,
            k,
            // 调整扇形高度
            i === 0 ? 10 : 10,
            i,
            series[i].pieData.value
        );

        startValue = endValue;

        legendData.push(series[i].name);
    }
    series.push({
        name: "pie2d",
        type: "pie",
        label: {
            opacity: 1,
            fontSize: 14,
            lineHeight: 20,
            textStyle: {
                fontSize: 14,
                color: "#fff",
            },
        },
        labelLine: {
            length: 10,
            length2: 10,
        },
        startAngle: 2, //起始角度，支持范围[0, 360]。
        clockwise: false, //饼图的扇区是否是顺时针排布。上述这两项配置主要是为了对齐3d的样式
        radius: ["55%", "60%"],
        center: ["62%", "50%"],
        data: pieData,
        itemStyle: {
            opacity: 0,
        },
        labelLine: {
            show: true
        },
        label: {
            show: false,
            position: 'center'
        },
    });
    return series;
}


</script>
<style scoped></style>